New Accounting Pronouncements (Details) - USD ($) $ in Millions	Jul. 26, 2019	Apr. 27, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 948
Total lease liability	$ 978
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets		$ 1,000
Total lease liability		$ 1,000